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Biodegradable polyhydroxyalkanoates with a different set of valerate monomers: Chemical structure and physicochemical properties / T. G. Volova, N. O. Zhila, E. G. Kiselev [et al.] // Int. J. Mol. Sci. - 2023. - Vol. 24, Is. 18. - Ст. 14082, DOI 10.3390/ijms241814082. - Cited References: 99. - The study was funded by the Russian Science Foundation (project no. 23-64-10007) . - ISSN 1661-6596. - ISSN 1422-0067
Кл.слова (ненормированные):
copolymers -- P(3HB-co-3HV-co-4HV) -- P(3HB-co-3HV-co-3H4MV) -- physicochemical properties -- thermal behavior -- isothermal crystallization -- spherulites formation rate -- morphology
Аннотация: The properties, features of thermal behavior and crystallization of copolymers containing various types of valerate monomers were studied depending on the set and ratio of monomers. We synthesized and studied the properties of three-component copolymers containing unusual monomers 4-hydroxyvalerate (4HV) and 3-hydroxy-4-methylvalerate (3H4MV), in addition to the usual 3-hydroxybutyrate (3HB) and 3-hydroxyvalerate (3HV) monomers. The results showed that P(3HB-co-3HV-co-4HV) and P(3HB-co-3HV-co-3H4MV) terpolymers tended to increase thermal stability, especially for methylated samples, including an increase in the gap between melting point (Tmelt) and thermal degradation temperature (Tdegr), an increase in the melting point and glass transition temperature, as well as a lower degree of crystallinity (40–46%) compared with P(3HB-co-3HV) (58–66%). The copolymer crystallization kinetics depended on the set and ratio of monomers. For terpolymers during exothermic crystallization, higher rates of spherulite formation (Gmax) were registered, reaching, depending on the ratio of monomers, 1.6–2.0 µm/min, which was several times higher than the Gmax index (0.52 µm/min) for the P(3HB-co-3HV) copolymer. The revealed differences in the thermal properties and crystallization kinetics of terpolymers indicate that they are promising polymers for processing into high quality products from melts.

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Держатели документа:
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia
Basic Department of Biotechnology, School of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk 660041, Russia
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/38 Akademgorodok, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Volova, Tatiana G.; Zhila, Natalia O.; Kiselev, Evgeniy G.; Sukovatyi, Aleksey G.; Lukyanenko, A. V.; Лукьяненко, Анна Витальевна; Shishatskaya, Ekaterina I.
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    Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption / C. R. Lin, O. S. Ivanova, I. S. Edelman [et al.] // Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст. 376, DOI 10.3390/nano12030376. - Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out . - ISSN 2079-4991
   Перевод заглавия: Наночастицы Fe3O4@C@C с двойным углеродным покрытием: Морфологические особенности, магнитные свойства, адсорбция красителей

РУБ Chemistry, Multidisciplinary + Nanoscience & Nanotechnology + Materials Science, Multidisciplinary + Physics, Applied
Рубрики:
SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Кл.слова (ненормированные):
core-shell Fe3O4@C nanoparticles -- core-shell Fe3O4@C@C nanoparticles -- magnetic properties -- dyes adsorption
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.

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Держатели документа:
Natl Pingtung Univ, Dept Appl Phys, Pingtung City 90003, Taiwan.
RAS, FRC KSC SB, Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660041, Russia.
RAS, FRC KSC SB, Inst Chem & Chem Technol, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Lin, Chun-Rong; Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S.; Эдельман, Ирина Самсоновна; Knyazev, Yu. V.; Князев, Юрий Владимирович; Zharkov, S. M.; Жарков, Сергей Михайлович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Svetlitsky, E. S.; Светлицкий, Евгений Сергеевич; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Solovyov, Leonid A.; Chen, Ying-Zhen; Tseng, Yaw-Teng; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
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Chaotic waveguide-based resonators for microlasers / J. A. Mendez-Bermudez [et al.] // Phys. Rev. B. - 2003. - Vol. 67, Is. 16. - Ст. 161104, DOI 10.1103/PhysRevB.67.161104. - Cited References: 33 . - ISSN 1098-0121

РУБ Physics, Condensed Matter
Рубрики:
QUANTUM-CLASSICAL CORRESPONDENCE
   MORPHOLOGY-DEPENDENT RESONANCES
   DIRECTIONAL EMISSION
   OPTICAL CAVITIES
   MICRODISK LASERS
   WAVE CHAOS
   DROPLETS
   PRECESSION
   BILLIARDS
   STATES
Аннотация: We propose the construction of highly directional emission microlasers using two-dimensional high-index semiconductor waveguides as open resonators. The prototype waveguide is formed by two collinear leads connected to a cavity of certain shape. The proposed lasing mechanism requires that the shape of the cavity yield mixed chaotic ray dynamics so as to have the approplate (phase space) resonance islands. These islands allow, via Heisenberg's uncertainty principle, the appearance of quasibound states (QBSs) which, in turn, propitiate the lasing mechanism. The energy values of the QBSs are found through the solution of the Helmholtz equation. We use classical ray dynamics to predict the direction and intensity of the lasing produced by such open resonators for typical values of the index of refraction.

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Держатели документа:
Univ Autonoma Puebla, Inst Fis, Puebla 72570, Mexico
Univ Hradec Kralove, Dept Phys, Hradec Kralove, Czech Republic
Acad Sci Czech Republ, Inst Phys, Prague, Czech Republic
LV Kirenskii Inst Phys, Krasnoyarsk 660036, Russia
ИФ СО РАН

Доп.точки доступа:
Mendez-Bermudez, J. A.; Luna-Acosta, G. A.; Seba, P.; Pichugin, K. N.; Пичугин, Константин Николаевич
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    Chemically synthesized Cu1-xFexCr2Se4 nanoparticles. Morphology and magnetic properties / C. R. Lin [et al.] // 20th Int. Conf. on Magnetism (ICM-2015) : book of abstracts. - 2015. - Ст. TU.F-P88
   Перевод заглавия: Химически синтезированные наночастицы Cu1-xFexCr2Se4. Морфология и магнитные свойства

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Доп.точки доступа:
Lin, C. R.; Chen, C. C.; Li, O.; Hsu, Hua-Shu; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Edelman, I. S.; Эдельман, Ирина Самсоновна; Velikanov, D. A.; Великанов, Дмитрий Анатольевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; International Conference on Magnetism(20 ; 2015 ; Jul ; 5-10 ; Barselona, Spain)
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Composite magnetic materials based on porous templates with different pores morphology: synthesis and magnetic properties [Текст] / L. A. Chekanova // V Euro-Asian simposium "Trend in MAGnetism": Nanomagnetism : abstracts. - Vladivostok : FEFU, 2013. - P169 . - ISBN 978-5-7444-3124-2

Доп.точки доступа:
Chekanova, L. A.; Чеканова, Лидия Александровна; Denisova, E. A.; Денисова, Елена Александровна; Mel'nikova, S. V.; Мельникова, Светлана Владимировна; Iskhakov, R. S.; Исхаков, Рауф Садыкович; Euro-Asian Symposium "Trends in MAGnetism": Nanomagnetism(5 ; 2013 ; Sept. ; 15-21 ; Vladivostok)
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Composition and morphology of Fe-Si interfaces and (Fe/Si)3 multilayer nanostructures / J. Bartolomé [и др.] // 20th Int. Conf. on Magnetism (ICM-2015) : book of abstracts. - 2015. - Ст. WE.J.2_I1

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Доп.точки доступа:
Bartolomé, J.; Badía-Romano, L.; Rubín, J. ; Bartolomé, F.; Magén, C.; Bürgler, D. E.; Rubio-Zuazo, J.; Castro, G. R. ; Varnakov, S. N.; Варнаков, Сергей Николаевич; Yakovlev, I. A.; Яковлев, Иван Александрович; Tarasov, I. A.; Тарасов, Иван Анатольевич; Platunov, M. S.; Платунов, Михаил Сергеевич; Ovchinnikov, S. G.; Овчинников, Сергей Геннадьевич; International Conference on Magnetism(20 ; 2015 ; Jul ; 5-10 ; Barselona, Spain)
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Composition, morphology, properties of coal fly ash microspheres and their application for conditioning liquid radioactive waste / N. N. Anshits [et al.] // International Journal of Nuclear Energy Science and Technology. - 2006. - Т. 2, № 1-2. - С. 8-24 . - ISSN 1741-6361. - ISSN 1741-637X

ГРНТИ

MeSH-главная:

РИНЦ
Держатели документа:
Federal State Unitary Enterprize ‘Mining Chemical Combine’ (MCC)
G.K. Boreskov’s Institute of Catalysis SB RAS (IC SB RAS)
Institute of Chemistry and Chemical Technology,SB RAS (ICCT SB RAS)
L.B. Kirenskii Institute of Physics SB RAS (IP SB RAS)
Доп.точки доступа:
Anshits, N. N. ; Аншиц, Наталья Николаевна; Salanov, A. N.; Vereshchagina, T. A.; Kruchek, D. M.; Bayukov, O. A.; Баюков, Олег Артемьевич; Tretyakov, A. A.; Revenko, Y. A.; Anshits, A. G.; Аншиц, Александр Георгиевич
}
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Core-shell iron oxide-carbon nanoparticles modified with Ag. synthesis, morphology, magnetic properties / D. A. Petrov, R. D. Ivantsov, S. M. Zharkov [et al.] // Euro-asian symposium "Trends in magnetism" (EASTMAG-2019) : Book of abstracts / чл. конс. ком.: S. G. Ovchinnikov, N. V. Volkov [et al.] ; чл. прогр. ком. D. M. Dzebisashvili [et al.]. - 2019. - Vol. 2. - Ст. J.P18. - P. 220-221. - Cited References: 2. - The reported study was funded by Russian Foundation for Basic Research, Government of Krasnoyarsk Territory, Krasnoyarsk Regional Fund of Science to the research project No. 18-42-243021 and by Joint Research Project of Russian Foundation for Basic Research and Ministry of Science and Technology, Taiwan MOST No. 19-52-52002 . - ISBN 978-5-9500855-7-4

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, Russia
National Pingtung University, Pingtung County, Taiwan

Доп.точки доступа:
Ovchinnikov, S. G. \чл. конс. ком.\; Овчинников, Сергей Геннадьевич; Volkov, N. V. \чл. конс. ком.\; Волков, Никита Валентинович; Dzebisashvili, D. M. \чл. прогр. ком.\; Дзебисашвили, Дмитрий Михайлович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Ivantsov, R. D.; Иванцов, Руслан Дмитриевич; Zharkov, S. M.; Жарков, Сергей Михайлович; Yurkin, G. Yu.; Юркин, Глеб Юрьевич; Molokeev, M. S.; Молокеев, Максим Сергеевич; Knyazev, Yu. V.; Князев, Юрий Владимирович; Lin, C.-R.; Tseng, Y.-T.; Российская академия наук; Уральское отделение РАН; Институт физики металлов им. М. Н. Михеева Уральского отделения РАН; Уральский федеральный университет им. первого Президента России Б.Н. Ельцина; Российский фонд фундаментальных исследований; Euro-Asian Symposium "Trends in MAGnetism"(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg); "Trends in MAGnetism", Euro-Asian Symposium(7 ; 2019 ; Sept. ; 8-13 ; Ekaterinburg)
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Core-shell magnetite nanoparticles: morphology, magnetic properties, organic dyes adsorption / O. S. Ivanova, I. S. Edelman, E. S. Svetlitsky [et al.] // International conference "Functional materials" : book of abstracts / ed. V. N. Berzhansky ; org. com. S. G. Ovchinnikov [et al.]. - Simferopol, 2023. - P. 114. - Cited References: 1. - РФН № 23-22-10025

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Держатели документа:
Kirensky Institute of Physics, FRC KSC SB RAS,
Siberian Federal University
National Pingtung University, 90003, Pingtung City, Taiwan

Доп.точки доступа:
Berzhansky, V. N. \ed.\; Бержанский, Владимир Наумович; Ovchinnikov, S. G. \org. com.\; Овчинников, Сергей Геннадьевич; Ivanova, O. S.; Иванова, Оксана Станиславовна; Edelman, I. S. (Edel'man, I. S.); Эдельман, Ирина Самсоновна; Svetlitsky, E. S.; Sokolov, A. Е.; Соколов, Алексей Эдуардович; Zharkov, S. M.; Жарков, Сергей Михайлович; Petrov, D. A.; Петров, Дмитрий Анатольевич; Sukhachev, A. L.; Сухачев, Александр Леонидович; Toropova, E. S.; Chun-Rong Lin; Ying-Zhen Chen; "Functional materials", International conference(2023 ; Oct. 2-6 ; Crimea, Foros); Крымский федеральный университет имени В.И. Вернадского
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10.

    Crystal chemistry and luminescence properties of red-emitting CsGd1−xEux(MoO4)2 solid-solution phosphors / P. L. Shi [et al.] // Dalton Trans. - 2014. - Vol. 43, Is. 25. - P. 9669-9676, DOI 10.1039/C4DT00339J. - Cited References: 46. - The present work was supported by the National Natural Science Foundations of China (grant no. 51002146, 51272242), Natural Science Foundations of Beijing (2132050), the Program for New Century Excellent Talents in University of Ministry of Education of China (NCET-12-0950), Beijing Nova Program (Z131103000413047), Beijing Youth Excellent Talent Program (YETP0635), the Fundamental Research Funds for the Central Universities (2-9-2014-044), and the Funds of the State Key Laboratory of New Ceramics and Fine Processing, Tsinghua University (KF201306). V. V. A. gratefully acknowledges the Ministry of Education and Science of the Russian Federation for the financial support. . - ISSN 1477-9226. - ISSN 1477-9234
   Перевод заглавия: Кристаллохимия и люминесцентные свойства твердых растворов люминофоров CsGd1-xEux(MoO4)2, излучающих красный свет

РУБ Chemistry, Inorganic & Nuclear
Рубрики:
WHITE-LIGHT
   VIBRATIONAL PROPERTIES
   HYDROTHERMAL SYNTHESIS
   SINGLE-CRYSTALS
   DIODES
   EFFICIENCY
   PHOTOLUMINESCENCE
   CSGD(MOO4)2
   MORPHOLOGY
   GROWTH
Аннотация: Scheelite related alkali-metal rare-earth double molybdate compounds with a general formula of ALn(MoO4)2 can find wide application as red phosphors. The crystal chemistry and luminescence properties of red-emitting CsGd1−xEux(MoO4)2 solid-solution phosphors have been evaluated in the present paper. A detailed analysis of the structural properties indicates the formation of isostructural scheelite-type CsGd1−xEux(MoO4)2 solid-solutions over the composition range of 0 ≤ x ≤ 1. The photoluminescence emission (PL) and excitation (PLE) spectra, and the decay curves were measured for this series of compounds. The critical doping concentration of Eu3+ is determined to be x = 0.6 in order to realize the maximum emission intensity. The emission spectra of the as-obtained CsGd(1−x)Eux(MoO4)2 phosphors show narrow high intensity red lines at 592 and 615 nm upon excitation at 394 or 465 nm, revealing great potential for applications in white light-emitting diode devices.

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Держатели документа:
China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China
Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
RAS, Kirensky Inst Phys, Lab Crystal Phys, SB, Krasnoyarsk 660036, Russia
RAS, Kirensky Inst Phys, Lab Opt Mat & Struct, SB, Novosibirsk 630090, Russia
Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia
Novosibirsk State Univ, Lab Semicond & Dielectr Mat, Novosibirsk 630090, Russia

Доп.точки доступа:
Shi, P. L.; Xia, Zhiguo; Molokeev, M. S.; Молокеев, Максим Сергеевич; Atuchin, V. V.
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